myopia or myopic astigmatism with presbyopia corrected good visual acuity
Conditions
Interventions
Wearing a pinhole contact lens with both eyes
Sponsors
RYOGOKU EYE CLINIC Hospital Director
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1) 45 years old and over 2) Patients with myopia and myopic astgmatism whose spherical equivalent of subjective refraction is between -1 and -9 dioptor as well as whose corrected visual acuity of 1.0 and pver 3) The astigmatism less than half of the spherical power 4) The patients whose both eyes can be observed and wearing 5) The patients who can come for examination on specified days 6) The patients who can wear pinhole contact lens daily for 3-8 hours 7) Soft CLs users 8) The patients who understand instructions and the explanation of the doctor, and can give a conscent
Exclusion criteria
Exclusion criteria: 1) multifocal CLs users 2) toric CLs users 3) usershard CLs users 4) Subjects who cannot wear a contact lens 5) Corneal endothelial cell density < 2000/mm2 6) Corneal diameter < 10mm 7) Subjects who have ocular diseases affecting visual function except for refractive error and presbyoia 8) A pregnant woman, a woman nursing or woman with the plan of the pregnancy 9)The person who connot follow the instructions of the ophthalmologist 10) Extremely nervous persons 11) Person who are not able to undergo examinations 12) In addition, the person who are judged unsuitable to use pinhole contactlens by ophthalmologists
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Distance and near visual acuities with or without the pinhole contact lens(both eyes). | — |
Countries
Japan
Contacts
Public ContactMiki Iwasaki
RYOGOKU EYE CLINIC Hospital Director
Outcome results
None listed